PERPETUAL POLLUTION

 A highly successful roadshow was conducted locally over the last weekend in July, focussed on the social, environmental, cultural and economic threats posed by mining.

 The events, held at Copmanhurst, Grafton, Drake and Dorrigo, were organised by the Clarence Catchment Alliance which had invited the Environmental Defenders Office to advise landowners of their rights when approached by a mining company requesting access to their properties.

 Among the many threats that are posed by mining, is the potential, particularly in mountainous landscapes in high rainfall areas, of the pollution of waterways as a result of tailings dam failure. However, a lesser-known pollution threat comes from acid mine drainage (AMD), aka acid rock drainage.

 AMD occurs naturally when sulphide minerals in the waste rock from mining react with air and water to form sulphuric acid. This acid leaches out metals in the rock, which can enter nearby waterways, or even seep into groundwater.

 In the USA it’s been described as the largest environmental problem facing the mining industry, with the international organisation, Earthworks, presenting a stark picture of the impacts, describing it as “perpetual pollution”. This is because it can continue indefinitely, long after mining has ended. They point to a literature review that concluded that “no hard rock surface mines exist today that can demonstrate that large scale acid mine drainage can be stopped once it occurs”.

 AMD also occurs across Australia, including here, in the Clarence River catchment. Drake’s Mt Carrington mine has long been known for AMD, and was responsible for polluting Sawpit Creek, a tributary of the Clarence, in the mid-1990s, and is likely still seeping into the river today, despite significant expenditure by both the mining companies responsible, and NSW taxpayers.

The NSW Derelict Mined Lands Rehabilitation Program spent $155,000 on AMD rehabilitation in the Drake area in 1996, with a further $100,000 budgeted for 1997, and ongoing expenditure ever since.

Now, following a string of failed mining ventures at Mt Carrington, Legacy Minerals, has acquired the mine, announcing yet more exploratory work.

 Can we really afford the risk?

 

-        John Edwards

 Published in the Voices for the Earth column in The Clarence Valley Independent , 6th August, 2025.

EARTH MATTERS SESSIONS IN GRAFTON START IN MARCH

 The Clarence Valley Conservation Coalition (CVCC) is restarting its Earth Matters environmental information sessions on March 18 after a break in 2020 following the advent of covid. 

These public events, introduced in 2004, were held every two months between March and November and were conducted by a range of people from the community, or from government or local environment groups. Sometimes the goal was acquiring information about an issue while at other times it involved exploration of an idea, the seeking of a solution or celebrating the wonders of the natural world.

The range of subjects over the years has included sustainable farming, climate change, the impact of light at night, flying fox ecology, cane toads in the Clarence Valley, Grafton’s tree heritage, riparian vegetation on the floodplain, native bees, waste management and recycling, inspiration for your town garden, conservation in north-west Tasmania, national parks in India and Bhutan, and restoring rainforest.

Recently the CVCC decided to restart these public information sessions.  The new venue is the Joan Muir Community Centre in Turf Street, Grafton.  Sessions will be held between 6 and 8 pm on the third Monday of the month in March, May, July, September and November.  The events will generally consist of a presentation by one or more speakers for an hour, followed by a short question and discussion session and light refreshments.  Those attending will be asked to contribute a gold coin to assist with expenses.  

The first two presentations have been arranged and the CVCC is looking forward to providing the community with information on a range of important environmental matters from March onwards.

Proposed Mineral Mining in the Clarence Catchment is the subject of the first Earth Matters session on March 18.  Shae Fleming, Clarence Catchment Alliance Coordinator (CCA), will discuss the current situation on mining in the Clarence Catchment, CCA's role, the community campaign's aim and progress to date, the threat of mineral mining to our local water, species, environment, social, cultural and economic wellbeing and how you can help.

-        Leonie Blain

 Published in the "Voices for the Earth" column in The Clarence Valley Independent , February 6, 2024.